posterior horn vs posterior root

posterior horn and posterior root both are nouns.

Word	Noun	Adjective	Verb	Adverb
posterior horn	Yes	No	No	No
posterior root	Yes	No	No	No

As nouns, posterior horn and posterior root are synonyms defined as:

posterior horn and posterior root: one of two roots of a spinal nerve that passes dorsally from the spinal cord and that consists of sensory fibers

Other synonyms of posterior horn include dorsal horn, dorsal root.

posterior horn (noun)	posterior root (noun)
one of two roots of a spinal nerve that passes dorsally from the spinal cord and that consists of sensory fibers	one of two roots of a spinal nerve that passes dorsally from the spinal cord and that consists of sensory fibers